The short version

From the latest prices and each company's SEC filings. Who's ahead on each measure, not which to buy.

  • AutoZone is the larger company, worth $48.0B, about 4.0 times BorgWarner.
  • AutoZone grew revenue faster over the last year (+2.4% vs +0.3%).
  • AutoZone keeps more of each dollar of revenue as operating profit (19.1% vs 5.0%).
  • On earnings, AutoZone is the cheaper stock (20.3x vs 33.7x).
  • AutoZone's price assumes faster free cash flow growth: about 9% a year, against -4% for BorgWarner (reverse DCF).

Side by side

The stronger figure is shaded where higher (or, for valuation multiples, lower) reads as better. How the implied growth works.

MeasureAZOBWA
Market cap$48.0B$11.9B
Share price$2,939.85$61.30
Revenue (last fiscal year)$18.9B$14.3B
Free cash flow (last fiscal year)$1.8B$1.2B
Revenue growth, last year+2.4%+0.3%
Revenue growth per year, last 5 fiscal years+6.7%+4.9%
Operating margin19.1%5.0%
Net margin13.2%2.9%
Return on equity—7.4%
P/E (trailing)20.3x33.7x
Price / free cash flow26.8x10.1x
EV / EBITDA14.8x9.07x
FCF growth the price implies8.8%-4.1%
Dividend yield—1.0%
Debt / equity—1.45x
Fundamental gradeDC
Superinvestors holding it65
Insider purchases, last 12 months70

Results from SEC filings

Revenue and free cash flow by fiscal year, from each company's 10-K filings.

AutoZone

YearRevenueFree cash flowOp. margin
2021$14.6B$2.9B20.1%
2022$16.3B$2.5B20.1%
2023$17.5B$2.1B19.9%
2024$18.5B$1.9B20.5%
2025$18.9B$1.8B19.1%

BorgWarner

YearRevenueFree cash flowOp. margin
2021$11.8B$792M7.7%
2022$12.6B$947M8.0%
2023$14.2B$565M8.2%
2024$14.1B$711M3.9%
2025$14.3B$1.2B3.7%

Where the revenue comes from

AutoZone · by segments, 2024

Auto Parts Stores$18.2B98%
Other$339M2%

BorgWarner · by segments, 2025

Turbos & Thermal Technologies$5.8B40%
Drivetrain & Morse Systems$5.6B39%
PowerDrive Systems$2.3B16%
Battery & Charging Systems$590M4%
Compare them in fullFifteen years of statements, quarterly results, DCF and IRR models, and any number of peers side by side.
Open AZO in Investingly

Questions

Which is bigger, AutoZone or BorgWarner?

AutoZone (AZO), at $48.0B against $11.9B.

Is AZO or BWA cheaper?

By trailing P/E, AutoZone (20.3x) is cheaper than BorgWarner (33.7x). A lower multiple can also mean the market expects less growth.

Which grows faster, AZO or BWA?

AutoZone: revenue grew +2.4% over the last year, against +0.3%.

Prices and ratios as of the last daily update; statements from SEC filings. Information only, not investment advice.